The subjects will be healthy premenopausal women aged 19-45, who have no history of chronic urinary tract infection or have had a urinary tract infection in the past 12 months, and are currently not taking antibiotics or any supplements to prevent UTI, including cranberry juice. The subjects must not have urinary tract abnormalities, requiring catheterization for micturition, be pregnant, or diabetic or have allergies to berry juices. Each test phase is 1 week (7 days) and the following protocol will be followed: